1. Viola Davis
A great actresses who doesn't seem to be getting many good opportunities. A lot of people seem to be predicting her for "Get On Up" in 2014 though.
2. Kate Hudson
Everyone knows her story. She was fantastic in Almost Famous, but seemed content with just doing romantic comedies after that. I'd like to see her at least attempt some more dramatic roles.
3. Neve Campbell
She's great in the Scream series. It never seemed like she wanted to become a big star, but she deserves better than just guest starring on T.V. shows now.
4. Winona Ryder
She was one of the biggest stars of the 1990s, also racking up 2 Oscar nominations in that time. Then in one fell swoop her career is stopped dead in its tracks for a minor crime. She never seemed to get back on track after that.
5. Evan Rachel Wood
I think she has a ton of potential but hasn't gotten the right parts yet. She's amazing in Thirteen, Mildred Pierce, and Across the Universe. I also loved her in The Wrestler.
6. Linda Cardellini
She was the star and MVP of Freaks and Geeks, yet her co-stars Jason Segal, James Franco, and Seth Rogen went on to become much bigger stars. She hasn't really done anything since besides a few TV Guest appearances.
7. Ellen Page
She's great in Juno, which earned her an Oscar nomination. But she hasn't really been heard from since. I almost forgot about her until the story of her coming out, well, came out.
8. Marissa Tomei
While she may have one of the best careers of the actresses on this list, I still don't think she gets the respect she deserves. The backlash/controversy over her 1992 Oscar win may have something to do with it.
9. Mary Elizabeth Winstead
She definitely has the talent (see Smashed and Scott Pilgrim vs. The World), but it's a shame that she's not getting bigger roles after her outstanding performances in those films.
10. Rachel McAdams
After her huge years in 2004-2005 (Mean Girls, The Notebook, Red Eye, Wedding Crashers), it seemed like she was destined to become a star. She's got the talent for more respectable roles, but she seems fine with minor romantic comedies (The Time Traveler's Wife, The Vow, About Time).